added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/rtc_api.c@147:ba84b7dc41a7, 2016-09-10 (annotated)
- Committer:
- JojoS
- Date:
- Sat Sep 10 15:32:04 2016 +0000
- Revision:
- 147:ba84b7dc41a7
- Parent:
- 144:ef7eb2e8f9f7
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /* mbed Microcontroller Library |
<> | 144:ef7eb2e8f9f7 | 2 | * Copyright (c) 2006-2015 ARM Limited |
<> | 144:ef7eb2e8f9f7 | 3 | * |
<> | 144:ef7eb2e8f9f7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
<> | 144:ef7eb2e8f9f7 | 5 | * you may not use this file except in compliance with the License. |
<> | 144:ef7eb2e8f9f7 | 6 | * You may obtain a copy of the License at |
<> | 144:ef7eb2e8f9f7 | 7 | * |
<> | 144:ef7eb2e8f9f7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 144:ef7eb2e8f9f7 | 9 | * |
<> | 144:ef7eb2e8f9f7 | 10 | * Unless required by applicable law or agreed to in writing, software |
<> | 144:ef7eb2e8f9f7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
<> | 144:ef7eb2e8f9f7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 144:ef7eb2e8f9f7 | 13 | * See the License for the specific language governing permissions and |
<> | 144:ef7eb2e8f9f7 | 14 | * limitations under the License. |
<> | 144:ef7eb2e8f9f7 | 15 | */ |
<> | 144:ef7eb2e8f9f7 | 16 | |
<> | 144:ef7eb2e8f9f7 | 17 | #include "mbed_assert.h" |
<> | 144:ef7eb2e8f9f7 | 18 | #include "device.h" |
<> | 144:ef7eb2e8f9f7 | 19 | |
<> | 144:ef7eb2e8f9f7 | 20 | #if DEVICE_RTC |
<> | 144:ef7eb2e8f9f7 | 21 | |
<> | 144:ef7eb2e8f9f7 | 22 | #include "rtc_api.h" |
<> | 144:ef7eb2e8f9f7 | 23 | #include "rtc_iodefine.h" |
<> | 144:ef7eb2e8f9f7 | 24 | |
<> | 144:ef7eb2e8f9f7 | 25 | |
<> | 144:ef7eb2e8f9f7 | 26 | #define RCR1_VAL_ON (0x08u) // AIE = 1 |
<> | 144:ef7eb2e8f9f7 | 27 | #define RCR1_VAL_OFF (0x00u) |
<> | 144:ef7eb2e8f9f7 | 28 | #define RCR2_VAL_ALLSTOP (0x00u) |
<> | 144:ef7eb2e8f9f7 | 29 | #define RCR2_VAL_START (0x01u) // START = 1 |
<> | 144:ef7eb2e8f9f7 | 30 | #define RCR2_VAL_RESET (0x02u) // RESET = 1 |
<> | 144:ef7eb2e8f9f7 | 31 | #define RCR3_VAL (0x00u) |
<> | 144:ef7eb2e8f9f7 | 32 | #define RCR5_VAL_EXTAL (0x01u) // RCKSEL = connect EXTAL |
<> | 144:ef7eb2e8f9f7 | 33 | #define RCR5_VAL_RTCX1 (0x00u) // RCKSEL = disconnect EXTAL |
<> | 144:ef7eb2e8f9f7 | 34 | #define RFRH_VAL_13333 (0x8003u) // 13.3333MHz (= 64Hz * 0x32DCD) |
<> | 144:ef7eb2e8f9f7 | 35 | #define RFRL_VAL_13333 (0x2DCDu) // |
<> | 144:ef7eb2e8f9f7 | 36 | #define RFRH_VAL_MAX (0x0007u) // MAX value (= 128Hz * 0x7FFFF) |
<> | 144:ef7eb2e8f9f7 | 37 | #define RFRL_VAL_MAX (0xFFFFu) // |
<> | 144:ef7eb2e8f9f7 | 38 | |
<> | 144:ef7eb2e8f9f7 | 39 | #define MASK_00_03_POS (0x000Fu) |
<> | 144:ef7eb2e8f9f7 | 40 | #define MASK_04_07_POS (0x00F0u) |
<> | 144:ef7eb2e8f9f7 | 41 | #define MASK_08_11_POS (0x0F00u) |
<> | 144:ef7eb2e8f9f7 | 42 | #define MASK_12_15_POS (0xF000u) |
<> | 144:ef7eb2e8f9f7 | 43 | #define MASK_16_20_POS (0x000F0000u) |
<> | 144:ef7eb2e8f9f7 | 44 | #define SHIFT_1_HBYTE (4u) |
<> | 144:ef7eb2e8f9f7 | 45 | #define SHIFT_2_HBYTE (8u) |
<> | 144:ef7eb2e8f9f7 | 46 | #define SHIFT_3_HBYTE (12u) |
<> | 144:ef7eb2e8f9f7 | 47 | #define SHIFT_1BYTE (8u) |
<> | 144:ef7eb2e8f9f7 | 48 | #define SHIFT_2BYTE (16u) |
<> | 144:ef7eb2e8f9f7 | 49 | |
<> | 144:ef7eb2e8f9f7 | 50 | #define TIME_ERROR_VAL (0xFFFFFFFFu) |
<> | 144:ef7eb2e8f9f7 | 51 | |
<> | 144:ef7eb2e8f9f7 | 52 | static int rtc_dec8_to_hex(uint8_t dec_val, uint8_t offset, int *hex_val); |
<> | 144:ef7eb2e8f9f7 | 53 | static int rtc_dec16_to_hex(uint16_t dec_val, uint16_t offset, int *hex_val); |
<> | 144:ef7eb2e8f9f7 | 54 | static uint8_t rtc_hex8_to_dec(uint8_t hex_val); |
<> | 144:ef7eb2e8f9f7 | 55 | static uint16_t rtc_hex16_to_dec(uint16_t hex_val); |
<> | 144:ef7eb2e8f9f7 | 56 | |
<> | 144:ef7eb2e8f9f7 | 57 | |
<> | 144:ef7eb2e8f9f7 | 58 | /* |
<> | 144:ef7eb2e8f9f7 | 59 | * Setup the RTC based on a time structure. |
<> | 144:ef7eb2e8f9f7 | 60 | * The rtc_init function should be executed first. |
<> | 144:ef7eb2e8f9f7 | 61 | * [in] |
<> | 144:ef7eb2e8f9f7 | 62 | * None. |
<> | 144:ef7eb2e8f9f7 | 63 | * [out] |
<> | 144:ef7eb2e8f9f7 | 64 | * None. |
<> | 144:ef7eb2e8f9f7 | 65 | */ |
<> | 144:ef7eb2e8f9f7 | 66 | void rtc_init(void) { |
<> | 144:ef7eb2e8f9f7 | 67 | volatile uint8_t dummy_read; |
<> | 144:ef7eb2e8f9f7 | 68 | |
<> | 144:ef7eb2e8f9f7 | 69 | // Set control register |
<> | 144:ef7eb2e8f9f7 | 70 | RTC.RCR2 = RCR2_VAL_ALLSTOP; |
<> | 144:ef7eb2e8f9f7 | 71 | RTC.RCR1 = RCR1_VAL_ON; |
<> | 144:ef7eb2e8f9f7 | 72 | RTC.RCR3 = RCR3_VAL; |
<> | 144:ef7eb2e8f9f7 | 73 | RTC.RCR5 = RCR5_VAL_EXTAL; |
<> | 144:ef7eb2e8f9f7 | 74 | RTC.RFRH = RFRH_VAL_13333; |
<> | 144:ef7eb2e8f9f7 | 75 | RTC.RFRL = RFRL_VAL_13333; |
<> | 144:ef7eb2e8f9f7 | 76 | |
<> | 144:ef7eb2e8f9f7 | 77 | // Dummy read |
<> | 144:ef7eb2e8f9f7 | 78 | dummy_read = RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 79 | dummy_read = RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 80 | |
<> | 144:ef7eb2e8f9f7 | 81 | RTC.RCR2 = RCR2_VAL_RESET; // RESET = 1 |
<> | 144:ef7eb2e8f9f7 | 82 | |
<> | 144:ef7eb2e8f9f7 | 83 | // Dummy read |
<> | 144:ef7eb2e8f9f7 | 84 | dummy_read = RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 85 | dummy_read = RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 86 | |
<> | 144:ef7eb2e8f9f7 | 87 | // Set timer and alarm. Default value :01-01-1970 00:00:00 |
<> | 144:ef7eb2e8f9f7 | 88 | RTC.RSECCNT = 0; |
<> | 144:ef7eb2e8f9f7 | 89 | RTC.RMINCNT = 0; |
<> | 144:ef7eb2e8f9f7 | 90 | RTC.RHRCNT = 0; |
<> | 144:ef7eb2e8f9f7 | 91 | RTC.RWKCNT = 0; |
<> | 144:ef7eb2e8f9f7 | 92 | RTC.RDAYCNT = 1; |
<> | 144:ef7eb2e8f9f7 | 93 | RTC.RMONCNT = 1; |
<> | 144:ef7eb2e8f9f7 | 94 | RTC.RYRCNT = 0x1970; |
<> | 144:ef7eb2e8f9f7 | 95 | RTC.RSECAR = 0; |
<> | 144:ef7eb2e8f9f7 | 96 | RTC.RMINAR = 0; |
<> | 144:ef7eb2e8f9f7 | 97 | RTC.RHRAR = 0; |
<> | 144:ef7eb2e8f9f7 | 98 | RTC.RWKAR = 0; |
<> | 144:ef7eb2e8f9f7 | 99 | RTC.RDAYAR = 1; |
<> | 144:ef7eb2e8f9f7 | 100 | RTC.RMONAR = 1; |
<> | 144:ef7eb2e8f9f7 | 101 | RTC.RYRAR = 0x1970; |
<> | 144:ef7eb2e8f9f7 | 102 | |
<> | 144:ef7eb2e8f9f7 | 103 | // Dummy read |
<> | 144:ef7eb2e8f9f7 | 104 | dummy_read = RTC.RYRCNT; |
<> | 144:ef7eb2e8f9f7 | 105 | dummy_read = RTC.RYRCNT; |
<> | 144:ef7eb2e8f9f7 | 106 | |
<> | 144:ef7eb2e8f9f7 | 107 | } |
<> | 144:ef7eb2e8f9f7 | 108 | |
<> | 144:ef7eb2e8f9f7 | 109 | |
<> | 144:ef7eb2e8f9f7 | 110 | /* |
<> | 144:ef7eb2e8f9f7 | 111 | * Release the RTC based on a time structure. |
<> | 144:ef7eb2e8f9f7 | 112 | * [in] |
<> | 144:ef7eb2e8f9f7 | 113 | * None. |
<> | 144:ef7eb2e8f9f7 | 114 | * [out] |
<> | 144:ef7eb2e8f9f7 | 115 | * None. |
<> | 144:ef7eb2e8f9f7 | 116 | */ |
<> | 144:ef7eb2e8f9f7 | 117 | void rtc_free(void) { |
<> | 144:ef7eb2e8f9f7 | 118 | volatile uint8_t dummy_read; |
<> | 144:ef7eb2e8f9f7 | 119 | |
<> | 144:ef7eb2e8f9f7 | 120 | // Set control register |
<> | 144:ef7eb2e8f9f7 | 121 | RTC.RCR2 = RCR2_VAL_ALLSTOP; |
<> | 144:ef7eb2e8f9f7 | 122 | RTC.RCR1 = RCR1_VAL_OFF; |
<> | 144:ef7eb2e8f9f7 | 123 | RTC.RCR3 = RCR3_VAL; |
<> | 144:ef7eb2e8f9f7 | 124 | RTC.RCR5 = RCR5_VAL_RTCX1; |
<> | 144:ef7eb2e8f9f7 | 125 | RTC.RFRH = RFRH_VAL_MAX; |
<> | 144:ef7eb2e8f9f7 | 126 | RTC.RFRL = RFRL_VAL_MAX; |
<> | 144:ef7eb2e8f9f7 | 127 | |
<> | 144:ef7eb2e8f9f7 | 128 | // Dummy read |
<> | 144:ef7eb2e8f9f7 | 129 | dummy_read = RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 130 | dummy_read = RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 131 | RTC.RCR2 = RCR2_VAL_RESET; // RESET = 1 |
<> | 144:ef7eb2e8f9f7 | 132 | |
<> | 144:ef7eb2e8f9f7 | 133 | // Dummy read |
<> | 144:ef7eb2e8f9f7 | 134 | dummy_read = RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 135 | dummy_read = RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 136 | |
<> | 144:ef7eb2e8f9f7 | 137 | // Set timer and alarm. Default value :01-01-1970 00:00:00 |
<> | 144:ef7eb2e8f9f7 | 138 | RTC.RSECCNT = 0; |
<> | 144:ef7eb2e8f9f7 | 139 | RTC.RMINCNT = 0; |
<> | 144:ef7eb2e8f9f7 | 140 | RTC.RHRCNT = 0; |
<> | 144:ef7eb2e8f9f7 | 141 | RTC.RWKCNT = 0; |
<> | 144:ef7eb2e8f9f7 | 142 | RTC.RDAYCNT = 1; |
<> | 144:ef7eb2e8f9f7 | 143 | RTC.RMONCNT = 1; |
<> | 144:ef7eb2e8f9f7 | 144 | RTC.RYRCNT = 0x1970; |
<> | 144:ef7eb2e8f9f7 | 145 | RTC.RSECAR = 0; |
<> | 144:ef7eb2e8f9f7 | 146 | RTC.RMINAR = 0; |
<> | 144:ef7eb2e8f9f7 | 147 | RTC.RHRAR = 0; |
<> | 144:ef7eb2e8f9f7 | 148 | RTC.RWKAR = 0; |
<> | 144:ef7eb2e8f9f7 | 149 | RTC.RDAYAR = 1; |
<> | 144:ef7eb2e8f9f7 | 150 | RTC.RMONAR = 1; |
<> | 144:ef7eb2e8f9f7 | 151 | RTC.RYRAR = 0x1970; |
<> | 144:ef7eb2e8f9f7 | 152 | |
<> | 144:ef7eb2e8f9f7 | 153 | // Dummy read |
<> | 144:ef7eb2e8f9f7 | 154 | dummy_read = RTC.RYRCNT; |
<> | 144:ef7eb2e8f9f7 | 155 | dummy_read = RTC.RYRCNT; |
<> | 144:ef7eb2e8f9f7 | 156 | |
<> | 144:ef7eb2e8f9f7 | 157 | } |
<> | 144:ef7eb2e8f9f7 | 158 | |
<> | 144:ef7eb2e8f9f7 | 159 | |
<> | 144:ef7eb2e8f9f7 | 160 | /* |
<> | 144:ef7eb2e8f9f7 | 161 | * Check the RTC has been enabled. |
<> | 144:ef7eb2e8f9f7 | 162 | * Clock Control Register RTC.RCR1(bit3): 0 = Disabled, 1 = Enabled. |
<> | 144:ef7eb2e8f9f7 | 163 | * [in] |
<> | 144:ef7eb2e8f9f7 | 164 | * None. |
<> | 144:ef7eb2e8f9f7 | 165 | * [out] |
<> | 144:ef7eb2e8f9f7 | 166 | * 0:Disabled, 1:Enabled. |
<> | 144:ef7eb2e8f9f7 | 167 | */ |
<> | 144:ef7eb2e8f9f7 | 168 | int rtc_isenabled(void) { |
<> | 144:ef7eb2e8f9f7 | 169 | int ret_val = 0; |
<> | 144:ef7eb2e8f9f7 | 170 | |
<> | 144:ef7eb2e8f9f7 | 171 | if ((RTC.RCR1 & RCR1_VAL_ON) != 0) { // RTC ON ? |
<> | 144:ef7eb2e8f9f7 | 172 | ret_val = 1; |
<> | 144:ef7eb2e8f9f7 | 173 | } |
<> | 144:ef7eb2e8f9f7 | 174 | |
<> | 144:ef7eb2e8f9f7 | 175 | return ret_val; |
<> | 144:ef7eb2e8f9f7 | 176 | } |
<> | 144:ef7eb2e8f9f7 | 177 | |
<> | 144:ef7eb2e8f9f7 | 178 | |
<> | 144:ef7eb2e8f9f7 | 179 | /* |
<> | 144:ef7eb2e8f9f7 | 180 | * RTC read function. |
<> | 144:ef7eb2e8f9f7 | 181 | * [in] |
<> | 144:ef7eb2e8f9f7 | 182 | * None. |
<> | 144:ef7eb2e8f9f7 | 183 | * [out] |
<> | 144:ef7eb2e8f9f7 | 184 | * UNIX timestamp value. |
<> | 144:ef7eb2e8f9f7 | 185 | */ |
<> | 144:ef7eb2e8f9f7 | 186 | time_t rtc_read(void) { |
<> | 144:ef7eb2e8f9f7 | 187 | |
<> | 144:ef7eb2e8f9f7 | 188 | struct tm timeinfo; |
<> | 144:ef7eb2e8f9f7 | 189 | int err = 0; |
<> | 144:ef7eb2e8f9f7 | 190 | uint8_t tmp_regdata; |
<> | 144:ef7eb2e8f9f7 | 191 | time_t t; |
<> | 144:ef7eb2e8f9f7 | 192 | |
<> | 144:ef7eb2e8f9f7 | 193 | if (rtc_isenabled() != 0) { |
<> | 144:ef7eb2e8f9f7 | 194 | RTC.RCR1 &= ~0x10u; // CIE = 0 |
<> | 144:ef7eb2e8f9f7 | 195 | do { |
<> | 144:ef7eb2e8f9f7 | 196 | // before reading process |
<> | 144:ef7eb2e8f9f7 | 197 | tmp_regdata = RTC.RCR1; |
<> | 144:ef7eb2e8f9f7 | 198 | tmp_regdata &= ~0x80u; // CF = 0 |
<> | 144:ef7eb2e8f9f7 | 199 | tmp_regdata |= 0x01u; // AF = 1 |
<> | 144:ef7eb2e8f9f7 | 200 | RTC.RCR1 = tmp_regdata; |
<> | 144:ef7eb2e8f9f7 | 201 | |
<> | 144:ef7eb2e8f9f7 | 202 | // Read RTC register |
<> | 144:ef7eb2e8f9f7 | 203 | err = rtc_dec8_to_hex(RTC.RSECCNT , 0 , &timeinfo.tm_sec); |
<> | 144:ef7eb2e8f9f7 | 204 | err += rtc_dec8_to_hex(RTC.RMINCNT , 0 , &timeinfo.tm_min); |
<> | 144:ef7eb2e8f9f7 | 205 | err += rtc_dec8_to_hex(RTC.RHRCNT , 0 , &timeinfo.tm_hour); |
<> | 144:ef7eb2e8f9f7 | 206 | err += rtc_dec8_to_hex(RTC.RDAYCNT , 0 , &timeinfo.tm_mday); |
<> | 144:ef7eb2e8f9f7 | 207 | err += rtc_dec8_to_hex(RTC.RMONCNT , 1 , &timeinfo.tm_mon); |
<> | 144:ef7eb2e8f9f7 | 208 | err += rtc_dec16_to_hex(RTC.RYRCNT , 1900 , &timeinfo.tm_year); |
<> | 144:ef7eb2e8f9f7 | 209 | } while ((RTC.RCR1 & 0x80u) != 0); |
<> | 144:ef7eb2e8f9f7 | 210 | } else { |
<> | 144:ef7eb2e8f9f7 | 211 | err = 1; |
<> | 144:ef7eb2e8f9f7 | 212 | } |
<> | 144:ef7eb2e8f9f7 | 213 | |
<> | 144:ef7eb2e8f9f7 | 214 | if (err == 0) { |
<> | 144:ef7eb2e8f9f7 | 215 | // Convert to timestamp |
<> | 144:ef7eb2e8f9f7 | 216 | t = mktime(&timeinfo); |
<> | 144:ef7eb2e8f9f7 | 217 | } else { |
<> | 144:ef7eb2e8f9f7 | 218 | // Error |
<> | 144:ef7eb2e8f9f7 | 219 | t = TIME_ERROR_VAL; |
<> | 144:ef7eb2e8f9f7 | 220 | } |
<> | 144:ef7eb2e8f9f7 | 221 | |
<> | 144:ef7eb2e8f9f7 | 222 | return t; |
<> | 144:ef7eb2e8f9f7 | 223 | } |
<> | 144:ef7eb2e8f9f7 | 224 | |
<> | 144:ef7eb2e8f9f7 | 225 | /* |
<> | 144:ef7eb2e8f9f7 | 226 | * Dec(8bit) to Hex function for RTC. |
<> | 144:ef7eb2e8f9f7 | 227 | * [in] |
<> | 144:ef7eb2e8f9f7 | 228 | * dec_val:Decimal value (from 0x00 to 0x99). |
<> | 144:ef7eb2e8f9f7 | 229 | * offset:Subtract offset from dec_val. |
<> | 144:ef7eb2e8f9f7 | 230 | * hex_val:Pointer of output hexadecimal value. |
<> | 144:ef7eb2e8f9f7 | 231 | * [out] |
<> | 144:ef7eb2e8f9f7 | 232 | * 0:Success |
<> | 144:ef7eb2e8f9f7 | 233 | * 1:Error |
<> | 144:ef7eb2e8f9f7 | 234 | */ |
<> | 144:ef7eb2e8f9f7 | 235 | static int rtc_dec8_to_hex(uint8_t dec_val, uint8_t offset, int *hex_val) { |
<> | 144:ef7eb2e8f9f7 | 236 | int err = 0; |
<> | 144:ef7eb2e8f9f7 | 237 | uint8_t ret_val; |
<> | 144:ef7eb2e8f9f7 | 238 | |
<> | 144:ef7eb2e8f9f7 | 239 | if (hex_val != NULL) { |
<> | 144:ef7eb2e8f9f7 | 240 | if (((dec_val & MASK_04_07_POS) >= (0x0A << SHIFT_1_HBYTE)) || |
<> | 144:ef7eb2e8f9f7 | 241 | ((dec_val & MASK_00_03_POS) >= 0x0A)) { |
<> | 144:ef7eb2e8f9f7 | 242 | err = 1; |
<> | 144:ef7eb2e8f9f7 | 243 | } else { |
<> | 144:ef7eb2e8f9f7 | 244 | ret_val = ((dec_val & MASK_04_07_POS) >> SHIFT_1_HBYTE) * 10 + |
<> | 144:ef7eb2e8f9f7 | 245 | (dec_val & MASK_00_03_POS); |
<> | 144:ef7eb2e8f9f7 | 246 | if (ret_val < offset) { |
<> | 144:ef7eb2e8f9f7 | 247 | err = 1; |
<> | 144:ef7eb2e8f9f7 | 248 | } else { |
<> | 144:ef7eb2e8f9f7 | 249 | *hex_val = ret_val - offset; |
<> | 144:ef7eb2e8f9f7 | 250 | } |
<> | 144:ef7eb2e8f9f7 | 251 | } |
<> | 144:ef7eb2e8f9f7 | 252 | } else { |
<> | 144:ef7eb2e8f9f7 | 253 | err = 1; |
<> | 144:ef7eb2e8f9f7 | 254 | } |
<> | 144:ef7eb2e8f9f7 | 255 | |
<> | 144:ef7eb2e8f9f7 | 256 | return err; |
<> | 144:ef7eb2e8f9f7 | 257 | } |
<> | 144:ef7eb2e8f9f7 | 258 | |
<> | 144:ef7eb2e8f9f7 | 259 | /* |
<> | 144:ef7eb2e8f9f7 | 260 | * Dec(16bit) to Hex function for RTC |
<> | 144:ef7eb2e8f9f7 | 261 | * [in] |
<> | 144:ef7eb2e8f9f7 | 262 | * dec_val:Decimal value (from 0x0000 to 0x9999). |
<> | 144:ef7eb2e8f9f7 | 263 | * offset:Subtract offset from dec_val. |
<> | 144:ef7eb2e8f9f7 | 264 | * hex_val:Pointer of output hexadecimal value. |
<> | 144:ef7eb2e8f9f7 | 265 | * [out] |
<> | 144:ef7eb2e8f9f7 | 266 | * 0:Success |
<> | 144:ef7eb2e8f9f7 | 267 | * 1:Error |
<> | 144:ef7eb2e8f9f7 | 268 | */ |
<> | 144:ef7eb2e8f9f7 | 269 | static int rtc_dec16_to_hex(uint16_t dec_val, uint16_t offset, int *hex_val) { |
<> | 144:ef7eb2e8f9f7 | 270 | int err = 0; |
<> | 144:ef7eb2e8f9f7 | 271 | uint16_t ret_val; |
<> | 144:ef7eb2e8f9f7 | 272 | |
<> | 144:ef7eb2e8f9f7 | 273 | if (hex_val != NULL) { |
<> | 144:ef7eb2e8f9f7 | 274 | if (((dec_val & MASK_12_15_POS) >= (0x0A << SHIFT_3_HBYTE)) || |
<> | 144:ef7eb2e8f9f7 | 275 | ((dec_val & MASK_08_11_POS) >= (0x0A << SHIFT_2_HBYTE)) || |
<> | 144:ef7eb2e8f9f7 | 276 | ((dec_val & MASK_04_07_POS) >= (0x0A << SHIFT_1_HBYTE)) || |
<> | 144:ef7eb2e8f9f7 | 277 | ((dec_val & MASK_00_03_POS) >= 0x0A)) { |
<> | 144:ef7eb2e8f9f7 | 278 | err = 1; |
<> | 144:ef7eb2e8f9f7 | 279 | *hex_val = 0; |
<> | 144:ef7eb2e8f9f7 | 280 | } else { |
<> | 144:ef7eb2e8f9f7 | 281 | ret_val = (((dec_val & MASK_12_15_POS)) >> SHIFT_3_HBYTE) * 1000 + |
<> | 144:ef7eb2e8f9f7 | 282 | (((dec_val & MASK_08_11_POS)) >> SHIFT_2_HBYTE) * 100 + |
<> | 144:ef7eb2e8f9f7 | 283 | (((dec_val & MASK_04_07_POS)) >> SHIFT_1_HBYTE) * 10 + |
<> | 144:ef7eb2e8f9f7 | 284 | (dec_val & MASK_00_03_POS); |
<> | 144:ef7eb2e8f9f7 | 285 | if (ret_val < offset) { |
<> | 144:ef7eb2e8f9f7 | 286 | err = 1; |
<> | 144:ef7eb2e8f9f7 | 287 | } else { |
<> | 144:ef7eb2e8f9f7 | 288 | *hex_val = ret_val - offset; |
<> | 144:ef7eb2e8f9f7 | 289 | } |
<> | 144:ef7eb2e8f9f7 | 290 | } |
<> | 144:ef7eb2e8f9f7 | 291 | } else { |
<> | 144:ef7eb2e8f9f7 | 292 | err = 1; |
<> | 144:ef7eb2e8f9f7 | 293 | } |
<> | 144:ef7eb2e8f9f7 | 294 | return err; |
<> | 144:ef7eb2e8f9f7 | 295 | } |
<> | 144:ef7eb2e8f9f7 | 296 | |
<> | 144:ef7eb2e8f9f7 | 297 | /* |
<> | 144:ef7eb2e8f9f7 | 298 | * RTC write function |
<> | 144:ef7eb2e8f9f7 | 299 | * [in] |
<> | 144:ef7eb2e8f9f7 | 300 | * t:UNIX timestamp value |
<> | 144:ef7eb2e8f9f7 | 301 | * [out] |
<> | 144:ef7eb2e8f9f7 | 302 | * None. |
<> | 144:ef7eb2e8f9f7 | 303 | */ |
<> | 144:ef7eb2e8f9f7 | 304 | void rtc_write(time_t t) { |
<> | 144:ef7eb2e8f9f7 | 305 | |
<> | 144:ef7eb2e8f9f7 | 306 | struct tm *timeinfo = localtime(&t); |
<> | 144:ef7eb2e8f9f7 | 307 | volatile uint16_t dummy_read; |
<> | 144:ef7eb2e8f9f7 | 308 | |
<> | 144:ef7eb2e8f9f7 | 309 | if (rtc_isenabled() != 0) { |
<> | 144:ef7eb2e8f9f7 | 310 | RTC.RCR2 = RCR2_VAL_ALLSTOP; |
<> | 144:ef7eb2e8f9f7 | 311 | dummy_read = (uint16_t)RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 312 | dummy_read = (uint16_t)RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 313 | RTC.RCR2 = RCR2_VAL_RESET; // RESET = 1 |
<> | 144:ef7eb2e8f9f7 | 314 | dummy_read = (uint16_t)RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 315 | dummy_read = (uint16_t)RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 316 | |
<> | 144:ef7eb2e8f9f7 | 317 | RTC.RSECCNT = rtc_hex8_to_dec(timeinfo->tm_sec); |
<> | 144:ef7eb2e8f9f7 | 318 | RTC.RMINCNT = rtc_hex8_to_dec(timeinfo->tm_min); |
<> | 144:ef7eb2e8f9f7 | 319 | RTC.RHRCNT = rtc_hex8_to_dec(timeinfo->tm_hour); |
<> | 144:ef7eb2e8f9f7 | 320 | RTC.RDAYCNT = rtc_hex8_to_dec(timeinfo->tm_mday); |
<> | 144:ef7eb2e8f9f7 | 321 | RTC.RMONCNT = rtc_hex8_to_dec(timeinfo->tm_mon + 1); |
<> | 144:ef7eb2e8f9f7 | 322 | RTC.RYRCNT = rtc_hex16_to_dec(timeinfo->tm_year + 1900); |
<> | 144:ef7eb2e8f9f7 | 323 | dummy_read = (uint16_t)RTC.RYRCNT; |
<> | 144:ef7eb2e8f9f7 | 324 | dummy_read = (uint16_t)RTC.RYRCNT; |
<> | 144:ef7eb2e8f9f7 | 325 | |
<> | 144:ef7eb2e8f9f7 | 326 | RTC.RCR2 = RCR2_VAL_START; // START = 1 |
<> | 144:ef7eb2e8f9f7 | 327 | |
<> | 144:ef7eb2e8f9f7 | 328 | dummy_read = (uint16_t)RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 329 | dummy_read = (uint16_t)RTC.RCR2; |
<> | 144:ef7eb2e8f9f7 | 330 | } |
<> | 144:ef7eb2e8f9f7 | 331 | } |
<> | 144:ef7eb2e8f9f7 | 332 | |
<> | 144:ef7eb2e8f9f7 | 333 | /* |
<> | 144:ef7eb2e8f9f7 | 334 | * HEX to Dec(8bit) function for RTC. |
<> | 144:ef7eb2e8f9f7 | 335 | * [in] |
<> | 144:ef7eb2e8f9f7 | 336 | * hex_val:Hexadecimal value. |
<> | 144:ef7eb2e8f9f7 | 337 | * [out] |
<> | 144:ef7eb2e8f9f7 | 338 | * decimal value:From 0x00 to 0x99. |
<> | 144:ef7eb2e8f9f7 | 339 | */ |
<> | 144:ef7eb2e8f9f7 | 340 | static uint8_t rtc_hex8_to_dec(uint8_t hex_val) { |
<> | 144:ef7eb2e8f9f7 | 341 | uint32_t calc_data; |
<> | 144:ef7eb2e8f9f7 | 342 | |
<> | 144:ef7eb2e8f9f7 | 343 | calc_data = hex_val / 10 * 0x10; |
<> | 144:ef7eb2e8f9f7 | 344 | calc_data += hex_val % 10; |
<> | 144:ef7eb2e8f9f7 | 345 | |
<> | 144:ef7eb2e8f9f7 | 346 | if (calc_data > 0x99) { |
<> | 144:ef7eb2e8f9f7 | 347 | calc_data = 0; |
<> | 144:ef7eb2e8f9f7 | 348 | } |
<> | 144:ef7eb2e8f9f7 | 349 | |
<> | 144:ef7eb2e8f9f7 | 350 | return (uint8_t)calc_data; |
<> | 144:ef7eb2e8f9f7 | 351 | } |
<> | 144:ef7eb2e8f9f7 | 352 | |
<> | 144:ef7eb2e8f9f7 | 353 | /* |
<> | 144:ef7eb2e8f9f7 | 354 | * HEX to Dec(16bit) function for RTC. |
<> | 144:ef7eb2e8f9f7 | 355 | * [in] |
<> | 144:ef7eb2e8f9f7 | 356 | * hex_val:Hexadecimal value. |
<> | 144:ef7eb2e8f9f7 | 357 | * [out] |
<> | 144:ef7eb2e8f9f7 | 358 | * decimal value:From 0x0000 to 0x9999. |
<> | 144:ef7eb2e8f9f7 | 359 | */ |
<> | 144:ef7eb2e8f9f7 | 360 | static uint16_t rtc_hex16_to_dec(uint16_t hex_val) { |
<> | 144:ef7eb2e8f9f7 | 361 | uint32_t calc_data; |
<> | 144:ef7eb2e8f9f7 | 362 | calc_data = hex_val / 1000 * 0x1000; |
<> | 144:ef7eb2e8f9f7 | 363 | calc_data += ((hex_val / 100) % 10) * 0x100; |
<> | 144:ef7eb2e8f9f7 | 364 | calc_data += ((hex_val / 10) % 10) * 0x10; |
<> | 144:ef7eb2e8f9f7 | 365 | calc_data += hex_val % 10; |
<> | 144:ef7eb2e8f9f7 | 366 | |
<> | 144:ef7eb2e8f9f7 | 367 | if (calc_data > 0x9999) { |
<> | 144:ef7eb2e8f9f7 | 368 | calc_data = 0; |
<> | 144:ef7eb2e8f9f7 | 369 | } |
<> | 144:ef7eb2e8f9f7 | 370 | return (uint16_t)calc_data; |
<> | 144:ef7eb2e8f9f7 | 371 | |
<> | 144:ef7eb2e8f9f7 | 372 | } |
<> | 144:ef7eb2e8f9f7 | 373 | |
<> | 144:ef7eb2e8f9f7 | 374 | #endif /* DEVICE_RTC */ |